ZMQII-3: cheap and nasty implementation of message filtering

src/sub.hpp

@@ -0,0 +1,51 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __ZMQ_SUB_INCLUDED__
+#define __ZMQ_SUB_INCLUDED__
+
+#include <set>
+#include <string>
+
+#include "socket_base.hpp"
+
+namespace zmq
+{
+
+    class sub_t : public socket_base_t
+    {
+    public:
+
+        sub_t (class app_thread_t *parent_);
+        ~sub_t ();
+
+        //  Overloads of API functions from socket_base_t.
+        int setsockopt (int option_, const void *optval_, size_t optvallen_);
+        int recv (struct zmq_msg_t *msg_, int flags_);
+
+    private:
+
+        //  List of all the active subscriptions.
+        typedef std::multiset <std::string> subscriptions_t;
+        subscriptions_t subscriptions;
+    };
+
+}
+
+#endif